Dietary Reference Intakes for Protein in United States (per day)

Males	RDA	AI
0-6 months	-	9.1 g
7-12 months	11 g	-
1-3 years	13 g	-
4-8 years	19 g	-
9-13 years	34 g	-
14-18 years	52 g	-
19-30 years	56 g	-
31-50 years	56 g	-
50-70 years	56 g	-
70 years and older	56 g	-

Females	RDA	AI
0-6 months	-	9.1 g
7-12 months	11 g	-
1-3 years	13 g	-
4-8 years	19 g	-
9-13 years	34 g	-
14-18 years	46 g	-
19-30 years	46 g	-
31-50 years	46 g	-
50-70 years	46 g	-
70 years and older	46 g	-

Pregnancy	RDA	AI
less than 18 years	71 g	-
19-30 years	71 g	-
31-50 years	71 g	-

Lactation	RDA	AI
less than 18 years	71 g	-
19-30 years	71 g	-
31-50 years	71 g	-

Reference: Dietary Reference Intakes (DRIs): Recommended Intakes for Individuals, Food and Nutrition Board, Institute of Medicine, National Academies, 2010